SUBMERSIBLE METER OF ROCK DESTRUCTION ENERGY EFFICIENCY Russian patent published in 2017 - IPC E21C39/00 

FIELD: mining engineering.

SUBSTANCE: submersible meter of rock destruction energy efficiency includes a hydraulic cylinder, loading piston with a rod equipped with an indenter. In this case, the hydraulic cylinder contains an intermediate rod connected to two pistons: external and internal, which divide the hydraulic cylinder into four cavities: inlet, middle, pressure and power. In this case, the middle cavity has an outlet to the atmosphere through a window in which a pusher is placed interacting with a stop located on the intermediate rod of the hydraulic cylinder and connected to a movable wedge which is in communication with the hydraulic cylinder body by means of a spacer spring. Between the pressure and the power cavity, hydraulic communication is provided through a channel.

EFFECT: increasing the accuracy of determining the energy efficiency of rock destruction, simplifying the operator's work during research.

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